Subject	concept
Predicate	has_property
Object	useful
Modality	Modality Occurrences
Polarity	POSITIVE
Plausibility	0.5727
Neighborhood Sigma	0.6779
Local Sigma	0.5727
Example Sentences	Sentence Occurrences Source concepts and prototypes are useful 2 Google Autocomplete concept of average power is useful 1 Google Autocomplete